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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.005 |
Sulfides (S2-) | <0.002 |
Sulfates (SO42-) | <0.01 |
Chlorides (Cl-) | <0.01 |
Ammonium salts (NH4+) | <0.002 |
Iron (Fe2+) | <0.0001 |
Sodium (Na+) | <0.02 |
Heavy metals (Pb2+) | <0.0005 |